SQL:2003 is the fifth revision of theSQLdatabasequery language. The standard consists of 9 parts which are described in detail inSQL. It was updated bySQL:2006.

The SQL:2003 standard makes minor modifications to all parts ofSQL:1999 (also known as SQL3), and officially introduces a few new features such as:^[1]

• XML-related features (SQL/XML)
• Window functions
• the sequence generator, which allows standardized sequences
• two new column types: auto-generated values and identity-columns
• the newMERGE statement
• extensions to theCREATE TABLE statement, to allow "CREATE TABLE AS" and "CREATE TABLE LIKE"
• removal of the poorly implemented "BIT" and "BIT VARYING" data types
• OLAP capabilities (initially added inSQL:1999) were extended with awindow function.^[2]

For details see.^[3]

The SQL standard is not freely available but may be purchased fromISO orANSI. A late draft is available as azip archiveArchived 2016-03-30 at theWayback Machine fromWhitemarsh Information Systems Corporation. The zip archive contains a number ofPDF files that define the parts of the SQL:2003 specification.

• BNF Grammar for ISO/IEC 9075:2003 – SQL/Framework

• SQL
• Declarative programming languages
• Query languages

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